Andy wrote:

> Kathleen said...
>
>
>>Pete C. wrote:
>>
>>>Chatty Cathy wrote:
>>>
>>>
>>>>Andy wrote:
>>>>
>>>>
>>>>
>>>>>That's a tad neurotic! The whole survey is! I won't eat an egg if it's
>>>>>rotten and that's it.
>>>>
>>>>Was it? Just because an egg has a "string" or a "spot" does not
>>>>necessarily mean its rotten, IMNSHO.
>>>>
>>>>--
>>>>Cheers
>>>>Chatty Cathy
>>>
>>>
>>>Correct, strings and specs have nothing whatsoever to do with an eggs
>>>freshness.
>>
>>Well, no, of course not. The string is part of the structure of the egg
>>itself. The bloody spot, otoh, indicates fertilization.
>
>
> I was told the blood spot was the chicken heart. True or false?

False as far as I recall. At the "red spot" stage the burgeoning embryo
is nowhere near developed enough to have differentiated cardiac tissue.
I think the red spot is the whole embryo, or blastula, or whatever you
call it when it's big enough to be visible to the naked eye but looks
more like a blackberry than a chicken when you put it under a scope.